build performance

Signed-off-by: Lee Calcote <lee.calcote@layer5.io>

Author: leecalcote

.env.development

@@ -1 +1,4 @@
 GATSBY_GRAPHQL_IDE=playground
+# Reduce concurrency to lower memory use during develop
+GATSBY_CPU_COUNT=2
+SHARP_CONCURRENCY=2

gatsby-node.js

@@ -1069,8 +1069,10 @@ exports.onCreateWebpackConfig = ({ actions, stage, getConfig }) => {
     },
   });
 
-  if (stage === "build-javascript") {
+  // Reduce memory pressure by disabling sourcemaps in dev and build
+  if (stage === "develop" || stage === "develop-html" || stage === "build-javascript" || stage === "build-html") {
     const config = getConfig();
+    config.devtool = false;
     const miniCssExtractPlugin = config.plugins.find(
       (plugin) => plugin.constructor.name === "MiniCssExtractPlugin"
     );